Contrary to female circumcision, male circumcision has some health benefits, the thing is that there are other better, simpler, safer, less invasive, less traumatic and non-permanent procedures males can do to obtain the same health benefits with the same efficiency (such has having good genital hygiene etc...). There is also this huge problem named religious freedom, and how a ban on male circumcision would ultimately deny people their religious freedom. Whether we want to accept it or not, the main reason why most religions enforce circumcision is to deprive boys of having sexual pleasure during masturbation. Period. There's absolutely no need to sugar coat it because it's a fact and the Catholic Church (and other religions) have never even tried to conceal it. Now, this begs the question: apart from circumcision done voluntarily or due to health-related reasons, why should we allow male circumcision for religious purposes and ban female circumcision? Because when it comes to religion, both are done because of this whole "sexual modesty" value that religions hold in such high regard, yet people tend to see male circumcision less problematic when it comes to religious purposes.

That is only true in some cases. Jews are circumcised on the eighth day of life. The Catholic Church does not consider circumcision in any way mandatory and they never did.